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Suffolk County

Sewage treatment plant, major discharger, West Babylon, New York. NPDES permit NY0104809 expired Dec 31, 2019; its limits still apply. Last 12 months: over a limit 20 times (last July 2026), 3 of 26 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (29 values), form V monthly (11 values), form Q quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
29 values over a limit, 0 required values missing, 0 of 29 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 20 values over a limit
Period endingParameterReportedLimitOver by
November 2025Solids, settleable, daily maximum4.4 mL/L≤ .3 mL/L1367%
November 2025Solids, total suspended, 7-day average57 mg/L≤ 45 mg/L27%
November 2025Solids, total suspended, monthly average31 mg/L≤ 30 mg/L3%
January 2026Solids, total suspended, 7-day average20729 lb/d≤ 15200 lb/d36%
January 2026Solids, total suspended, 7-day average97 mg/L≤ 45 mg/L116%
January 2026Solids, total suspended, monthly average42 mg/L≤ 30 mg/L40%
February 2026Solids, settleable, daily maximum8 mL/L≤ .3 mL/L2567%
February 2026Solids, total suspended, 7-day average116 mg/L≤ 45 mg/L158%
February 2026Solids, total suspended, 7-day average26210 lb/d≤ 15200 lb/d72%
February 2026Solids, total suspended, monthly average13268 lb/d≤ 10350 lb/d28%
February 2026Solids, total suspended, monthly average58 mg/L≤ 30 mg/L93%
March 2026Solids, settleable, daily maximum14.8 mL/L≤ .3 mL/L4833%
March 2026Solids, total suspended, 7-day average116 mg/L≤ 45 mg/L158%
March 2026Solids, total suspended, 7-day average33225 lb/d≤ 15200 lb/d119%
March 2026Solids, total suspended, monthly average13056 lb/d≤ 10350 lb/d26%
March 2026Solids, total suspended, monthly average47 mg/L≤ 30 mg/L57%
April 2026Solids, settleable, daily maximum6.2 mL/L≤ .3 mL/L1967%
April 2026Solids, total suspended, 7-day average51 mg/L≤ 45 mg/L13%
May 2026Solids, settleable, daily maximum6.6 mL/L≤ .3 mL/L2100%
July 2026Solids, settleable, daily maximum4.5 mL/L≤ .3 mL/L1400%

Limits in force (63)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 7600 lb/dall year
Solids, total suspendedmonthly average≤ 10350 lb/dall year
Solids, total suspended7-day average≤ 11000 lb/dall year
Solids, total suspended7-day average≤ 15200 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Arsenic, total [as As]daily maximum≤ 12 lb/d (alert, not enforceable)all year
Arsenic, total [as As]daily maximum≤ 16 lb/d (alert, not enforceable)all year
Copper, total [as Cu]daily maximum≤ 13 lb/d (alert, not enforceable)all year
Copper, total [as Cu]daily maximum≤ 17 lb/d (alert, not enforceable)all year
Thallium, total [as Tl]daily maximum≤ 6.3 lb/d (alert, not enforceable)all year
Thallium, total [as Tl]daily maximum≤ 8.4 lb/d (alert, not enforceable)all year
Zinc, total [as Zn]daily maximum≤ 23 lb/d (alert, not enforceable)all year
Zinc, total [as Zn]daily maximum≤ 30 lb/d (alert, not enforceable)all year
Chloroformdaily maximum≤ 1.4 lb/d (alert, not enforceable)all year
Chloroformdaily maximum≤ 1.85 lb/dall year
Phenolics, total recoverabledaily maximum≤ 7.2 lb/d (alert, not enforceable)all year
Phenolics, total recoverabledaily maximum≤ 9.5 lb/d (alert, not enforceable)all year
Toluenedaily maximum≤ .4 lb/d (alert, not enforceable)all year
Toluenedaily maximum≤ .53 lb/d (alert, not enforceable)all year
Methylene chloridedaily maximum≤ 5.5 lb/d (alert, not enforceable)all year
Methylene chloridedaily maximum≤ 7.3 lb/d (alert, not enforceable)all year
Tetrachloroethylenedaily maximum≤ .4 lb/d (alert, not enforceable)all year
Tetrachloroethylenedaily maximum≤ .53 lb/d (alert, not enforceable)all year
Nitrogen, ammonia, total [as NH3]monthly average≤ 16.43 mg/LMay–Oct
Nitrogen, ammonia, total [as NH3]monthly average≤ 48.5 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia, total [as NH3]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia, total [as NH3]daily maximum≤ 14.6 mg/LMay–Oct
Nitrogen, ammonia, total [as NH3]monthly averagereport only (mg/L)all year
Nitrogen, ammonia, total [as NH3]daily maximumreport only (mg/L)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 1.7 lb/d (alert, not enforceable)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 2.25 lb/d (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmonthly average≤ 30.5 MGDall year
Flow, in conduit or thru treatment plantmonthly average≤ 40.5 MGDall year
Chlorine, total residualdaily maximum≤ 3 mg/Lall year
Mercury, total [as Hg]daily maximum≤ 200 ng/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
Coliform, total generalmonthly median≤ 700 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 6400 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8500 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 10000 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 13500 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %all year

How strict are these limits?

Cited limits by parameter: New York's rules and the federal ones.

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Your permit document is the final word. As JSON: /api/v1/permits/NY0104809 · MCP: https://passage-data.com/mcp